Coherer and decoherer.



JOSEPH L. JONES, or KIZEB, TENNESSEE.

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Specificationiof Letters Patent.

- Patented May 6, 1.908.

Application filed December 26, 1906. Serial No.'349,475.

To all whom it may concern:

Be it known that I, JOSEPH L. JONES, a-

citizen of the United States, residing at Kizer, in the county of Blountand State of 5 Tennessee, have invented a new and useful Coherer andDecoherer, of which. the folldwin is a specification.

his invention relates to coherers and decoherers for use in connectionwith wireless telegraphy and signaling systems, and has for itsprlncipal object to provide a coherer that is mounted for free movement,so that when agitated the particles of metal in the coherer tube will beloosened.

A further object of the invention is to provide a device of this classin which the deco-' hering operation is accomplished by shaking thecoherer instead of agitating the same by tappers as usual.

A still further object of the invention is to provide a device of thisclass in which the co- 18161 is carried directly by the decoheringmechanism.

A still further object of the invention is to provide a device of thisclass in which the decoherer is in the form of an armature or armaturelever arranged within the field of force of an electro-magnet, and isprovided With'means for supporting the coherer tube.

With these and other objects in view, as will more fully hereinafter ap'ear, the invention'consists in certain nove features ofconstruction'and arrangement of parts, hereinafter fully described,illustrated in the accomanyi draw' s, and articularly pointed ut in heappfide'd claims, it being understood that various changes in the form,proportions, size and minor details of the structure may be made withoutdeparting from the spirit or sacrificing any of the advantages of theinvention.

' .In the accompanying drawings z-Figure 1 is a perspective view of acoherer and decoherer constructed in accordance with the invention. Fig.2 is a side elevation of the same,

Similar numerals of reference are employed to indicate correspondingparts throughout the several figures of the drawings.

In carr ing out the invention, a standard 10 forme of metal or other,suitable material .is mounted on a suitable base 11, of woodor otherinsulating material. The up er end of the standard 1s, bent. over andownward forming an arm 12 to which is attached a small spring strip 15,and to the lowerend of this spring is rigidly secured an armature 16.The armature is arranged immediately in front of a pair ofelectro-magnets 17, and is provided with a suitable make and breakdevice for vibrating the coherer tube 19. The

make and break device preferably consists of a spring contact member 13one end of which is secured to the armature 17 while the opposite endthereof is adapted to. engage a stationary contact 14 and thus make andbreak the circuit when the electro magnets are energized, the spring 15serving to hold the contacts 13 and 14 normally in engagement with eachother, as shown.

The lower end of the armature is curved to form a hook 18 for thereception of the coherer tube 19, said tube being formed, as usual, ofglass and containing metal filings. At the opposite ends of the tube arearranged small metal blocks 20 which are connected by loose wires 21 tobinding posts 22 and 23, respectively, that are carried by the base 11,one of the binding posts being arranged for connection to the aerialconductor, and the other being grounded. The glass tube is' filings areshaken up and the current broken or interrupted, it being of courseunderstood that a switch or similar device will be included in thebattery circuit for controlling the same. a pair of binding posts 27 forconnection to the decoherer battery, although the connections with thedecoherer magnets may, of course, be made in an suitable manner.

The 0 eration of t ecoherer proper is in the usua manner, the flow ofcurrent from the aerial conductor causing the particles of metal in'thecoherer to cl together for the purpose of closing a local circu t, andas the current is made andbroken in the usual manner through the electromagnets of the decoherer, the armature will be attracted and re: leased,and the coherer tube will be shaken or agitated forthe purpose ofcausing the The base is further provided with partlcles of metal toseparate and thus prevent the passage of the current. The .wires 21 are,of course, mounted loosely, so that they will not in any mannerinterfere with the vibratory niovenient of the coherer.

The device is of simple and inexpensive construction and may be readilyinstalled in existing systems of wireless telegru-phy.

I clannz-- 1, A decoherer electro-magnet, an armsture arranged withinthe iicld of force of the magnet and having a hooked end, a make andbreak device, and a coherer supported by the hook.

2. In combination, a base, a standard carried thereby, an armature, aspring connecting the armature to the standard, the lower portion ofsaid armature being turned to form a hook, an electrounagnet supportedby the standard, a coherer tube, binding posts arranged on the base,loose wires connecting the binding posts to the ends of the coherer, aninsulating tube surrounding the coherer tube and provided with a notch,and a securingscrew extending through the notch and across the hookedportion of the armature.

In testimony that I claim the foregoing as my own, I havehereto al'lixedmy signature in the presence of two witnesses.

JOSEPH L. JON IS.

\'Vitnesses:

J. H. BRr NT, J12, .B. H. BORING.

